Results 111 to 120 of about 1,022 (197)

Were all trilobites fully marine? Trilobite expansion into brackish water during the early Palaeozoic. [PDF]

Proc Biol Sci, 2021
Mángano MG, Buatois LA, Waisfeld BG, Muñoz DF, Vaccari NE, Astini RA.   +5 more
europepmc   +1 more source

THE NATURE OF POTASSIUM IN TREMADOCIAN DICTYONEMA SHALE (ESTONIA)

Oil Shale, 1996
Aadu Loog, J. Aruväli, Valter Petersell
openaire   +1 more source

The Family Olenidae (Trilobita, Arthropoda): A synopsis of its taxonomic composition, stratigraphic and paleogeographic distribution

Publicación Electrónica de la Asociación Paleontológica Argentina
This paper provides a list of all named species in the family Olenidae, along with their geographic and stratigraphic records. It also discusses each of the valid genera in the family and describes the composition of the entire group and its subfamilies
Daniela Soledad Monti
doaj   +1 more source

Depositional environments and stratigraphy of the Upper Cambrian-lower Ordovician Santa Rosita formation at the Alfarcito area, Cordillera Oriental, Argentina: integration of biostratigraphic data within a sequence stratigraphic framework

Latin American Journal of Sedimentology and Basin Analysis
The Upper Cambrian-Tremadocian rocks exposed in the Alfarcito area of Cordillera Oriental, northwest Argentina reveal a series of transgressive-regressive cycles punctuated by incision of fluvio-estuarine valleys.
Luis A. Buatois, Fernando J. Zeballo, Guillermo L. Albanesi, Gladys Ortega, N. Emilio Vaccari, M. Gabriela Mangano   +5 more
doaj  

A new somasteroid from the Fezouata Lagerstätte in Morocco and the Early Ordovician origin of Asterozoa. [PDF]

Biol Lett, 2021
Hunter AW, Ortega-Hernández J.
europepmc   +1 more source

Cambrian and Ordovician stratigraphy and biostratigraphy of the Arafura Basin, offshore Northern Territory [PDF]

, 2016
Recovery of conodonts and other fossils from four petroleum exploration wells (Esso Tasman 1 and Torres 1; Petrofina Goulburn 1 and Arafura 1), drilled in the Goulburn Graben of the Arafura Basin off the northern coast of Australia, have extended the ...
Zhen, Y.Y., Nicoll, Robert, Laurie, John R   +2 more
core  

AUTHIGENIC CARBONATE MINERALS IN THE TREMADOCIAN GRAPTOLITIC ARGILLITE OF ESTONIA

Oil Shale, 1995
Aadu Loog, J. Aruväli, Valter Petersell
openaire   +1 more source

from the Upper Cambrian-Lower Tremadocian of Northwest Argentina: Implications for the Arthrophycid Lineage and Potential in Ichnostratigraphy

, 2005
A new ichnospecies of Arthrophycus Hall 1852, A. minimus , is described from Upper Cambrian-Lower Tremadocian, shallow-marine strata of northwest Argentina. This new ichnospecies consists of small, long, regularly annulated hypichnial elements displaying
Fernando Muñiz Guinea, Mangano, Maria Gabriela, Luis A. Buatois, Carmona, Noelia Beatriz, Muñiz Guinea, Fernando, Buatois, Luis Alberto, Noelia B. Carmona, M. Gabriela Mángano   +7 more
core   +1 more source

Proposed Early Cambrian cephalopods are chimaeras, the oldest known cephalopods are 30 m.y. younger. [PDF]

Commun Biol, 2023
Landing E, Kröger B, Westrop SR, Geyer G.   +3 more
europepmc   +1 more source

New fossil assemblages from the Early Ordovician Fezouata Biota. [PDF]

Sci Rep, 2022
Saleh F, Vaucher R, Vidal M, Hariri KE, Laibl L, Daley AC, Gutiérrez-Marco JC, Candela Y, Harper DAT, Ortega-Hernández J, Ma X, Rida A, Vizcaïno D, Lefebvre B.   +13 more
europepmc   +1 more source